Source code for stellar_sdk.xdr.transaction_meta_v2
# This is an automatically generated file.
# DO NOT EDIT or your changes may be overwritten
import base64
from typing import List
from xdrlib import Packer, Unpacker
from ..exceptions import ValueError
from ..type_checked import type_checked
from .ledger_entry_changes import LedgerEntryChanges
from .operation_meta import OperationMeta
__all__ = ["TransactionMetaV2"]
[docs]@type_checked
class TransactionMetaV2:
"""
XDR Source Code::
struct TransactionMetaV2
{
LedgerEntryChanges txChangesBefore; // tx level changes before operations
// are applied if any
OperationMeta operations<>; // meta for each operation
LedgerEntryChanges txChangesAfter; // tx level changes after operations are
// applied if any
};
"""
def __init__(
self,
tx_changes_before: LedgerEntryChanges,
operations: List[OperationMeta],
tx_changes_after: LedgerEntryChanges,
) -> None:
if operations and len(operations) > 4294967295:
raise ValueError(
f"The maximum length of `operations` should be 4294967295, but got {len(operations)}."
)
self.tx_changes_before = tx_changes_before
self.operations = operations
self.tx_changes_after = tx_changes_after
def pack(self, packer: Packer) -> None:
self.tx_changes_before.pack(packer)
packer.pack_uint(len(self.operations))
for operation in self.operations:
operation.pack(packer)
self.tx_changes_after.pack(packer)
@classmethod
def unpack(cls, unpacker: Unpacker) -> "TransactionMetaV2":
tx_changes_before = LedgerEntryChanges.unpack(unpacker)
length = unpacker.unpack_uint()
operations = []
for _ in range(length):
operations.append(OperationMeta.unpack(unpacker))
tx_changes_after = LedgerEntryChanges.unpack(unpacker)
return cls(
tx_changes_before=tx_changes_before,
operations=operations,
tx_changes_after=tx_changes_after,
)
def to_xdr_bytes(self) -> bytes:
packer = Packer()
self.pack(packer)
return packer.get_buffer()
@classmethod
def from_xdr_bytes(cls, xdr: bytes) -> "TransactionMetaV2":
unpacker = Unpacker(xdr)
return cls.unpack(unpacker)
def to_xdr(self) -> str:
xdr_bytes = self.to_xdr_bytes()
return base64.b64encode(xdr_bytes).decode()
@classmethod
def from_xdr(cls, xdr: str) -> "TransactionMetaV2":
xdr_bytes = base64.b64decode(xdr.encode())
return cls.from_xdr_bytes(xdr_bytes)
def __eq__(self, other: object):
if not isinstance(other, self.__class__):
return NotImplemented
return (
self.tx_changes_before == other.tx_changes_before
and self.operations == other.operations
and self.tx_changes_after == other.tx_changes_after
)
def __str__(self):
out = [
f"tx_changes_before={self.tx_changes_before}",
f"operations={self.operations}",
f"tx_changes_after={self.tx_changes_after}",
]
return f"<TransactionMetaV2 {[', '.join(out)]}>"